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Patentes

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Número de publicaciónEP0325836 A3
Tipo de publicaciónSolicitud
Número de solicitudEP19880310082
Fecha de publicación7 Mar 1990
Fecha de presentación27 Oct 1988
Fecha de prioridad21 Ene 1988
También publicado comoEP0325836A2, US4852567
Número de publicación1988310082, 88310082, 88310082.8, EP 0325836 A3, EP 0325836A3, EP-A3-0325836, EP0325836 A3, EP0325836A3, EP19880310082, EP88310082
InventoresEdward L. Sinofsky
SolicitanteC.R. Bard, Inc.
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos:  Espacenet, Registro europeo de patentes
Laser tipped catheter
EP 0325836 A3
Resumen
A laser catheter for insertion in a body passage and for treatment of a relatively inaccessible location with laser radiation in a preselected first wavelength range, typically in the mid-infrared band, that is outside the transmission passband of silica optical fibers. The laser catheter includes an elongated flexible tube, an optical fiber for carrying optical pumping laser radiation in a second wavelength range through the flexible tube, and a laser attached to the flexible tube at or near the distal end thereof and responsive to optical pumping laser radiation in the second wavelength range for generating output laser radiation in the first wavelength range. The laser can comprise a cylindrical laser crystal attached to the distal end of the flexible tube and having laser mirrors on opposite end faces thereof. The laser crystal can be a suitable host material doped with a rare earth ion selected to produce the desired output wavelength. A preferred laser crystal is erbium-doped YAG, which produces an output at 2.94 micrometers. The optical pumping radiation is supplied from an external pump laser, which is preferably an alexandrite laser operating in the wavelength range of 0.7 to 0.8 micrometer.
Descripción  disponible en
Reclamaciones  disponible en
Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
EP0214712A1 *27 May 198618 Mar 1987C.R. Bard, Inc.Infrared laser catheter apparatus
DD214292A1 * Título no disponible
US4386428 *14 Oct 198031 May 1983Sanders Associates, Inc.Tripled Nd:YAG Pumped Tm3+ laser oscillator
US4686979 *19 Feb 198518 Ago 1987The United States Of America As Represented By The United States Department Of EnergyExcimer laser phototherapy for the dissolution of abnormal growth
WO1987000748A1 *30 Jul 198612 Feb 1987Daniele Sylvie Aron RosaDevice for ophthalmologic surgery by photoablation
Otras citas
Referencia
1 *THE CO2 LASER IN OTOLARYNGOLOGY AND HEAD AND NECK SURGERY, editors V.H. Oswal et al., Butterworth-Scientific, London, pages 188-193
Clasificaciones
Clasificación internacionalA61B18/24, A61B18/22, A61N5/06
Clasificación cooperativaA61B2018/2261, A61B18/245, A61B2018/2272
Clasificación europeaA61B18/24B
Eventos legales
FechaCódigoEventoDescripción
2 Ago 1989AKDesignated contracting states:
Kind code of ref document: A2
Designated state(s): BE DE ES FR GB IT NL
7 Mar 1990AKDesignated contracting states:
Kind code of ref document: A3
Designated state(s): BE DE ES FR GB IT NL
26 Sep 199017PRequest for examination filed
Effective date: 19900726
16 Dic 199217QFirst examination report
Effective date: 19921029
10 Nov 199318DDeemed to be withdrawn
Effective date: 19930511